Qstnid -18- For The Reaction, 2cl<sub>(</sub><sub><i>g)</i></sub> &Rarr; Cl<sub>2(</sub><sub><i>g</i></sub><sub>),</sub> What Are The Signs Of Δ<i>h </I>and Δ<i>s </I>? - 06: Chemical Thermodynamics - Neet-xi-chemistry

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NEET-XI-Chemistry

06: Chemical Thermodynamics

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Qstn# 18 Prvs-Qstn Next-Qstn

#18
For the reaction,

2Cl₍_g) → Cl₂₍_g_), what are the signs of ΔH and ΔS ?

Ans : ΔH and ΔS are negative

The given reaction represents the formation of chlorine molecule from chlorine atoms. Here, bond formation is taking place. Therefore, energy is being released. Hence, ΔH is negative.

Also, two moles of atoms have more randomness than one mole of a molecule. Since spontaneity is decreased, ΔS is negative for the given reaction.